I have made tiers 1,2 and 3 machines and connected them to a power grid that has plenty of electricity. Then inside the lvl 1 machine i have placed a new air filter and it doesn't seem to suck out any pollution after waiting a minute. Also in the lvl 2/3 machines i cannot insert any new air filters... PS the lvl 2/3 machines do not have the "pollution recycling" symbol on them like they do on the GIF in the information tab.
I have made tiers 1,2 and 3 machines and connected them to a power grid that has plenty of electricity. Then inside the lvl 1 machine i have placed a new air filter and it doesn't seem to suck out any pollution after waiting a minute. Also in the lvl 2/3 machines i cannot insert any new air filters... PS the lvl 2/3 machines do not have the "pollution recycling" symbol on them like they do on the GIF in the information tab.